Each child element-type in that sequence will be generated (while using code generation tool on WSDL) as a parameter of the operation in the service interface.
将生成（在 WSDL 上使用代码生成工具时）此序列中的每一个子元素类型作为服务界面中的操作参数。
Named parameter makes the application robust so that you don't need to change the application even if the sequence of the parameter in the stored procedure changes.
命名参数使应用程序更加健壮，所以，即使存储过程中参数的顺序发生了改变，也不必修改应用程序。
All the parameter values of the step are specified in the proper sequence and separated with a space within the inner brackets.
步骤的所有参数值按照顺序指定，并且在内层中括号内使用空格分开。
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